package com.An.conf;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @auther AnYang
 * @date 2022/3/27 15:15
 **/
/*登录拦截器*/
public class LoginHandlerInterceptor implements HandlerInterceptor {
	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {


		//登陆成功之后，有用户的session。
		Object user = request.getSession().getAttribute("user");
		Object student = request.getSession().getAttribute("student");
		if (user == null && student == null) {
			request.setAttribute("msg", "没有权限，请先登录");
			//返回首页，重定向
			request.getRequestDispatcher("/index.html").forward(request, response);
			return false;
		} else return true;
		//return true;
	}

	@Override
	public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

	}

	@Override
	public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

	}
}